Modeling of fixed-bed columns for gas physical adsorption
Adsorption processes may be classified as purification or bulk separation, depending on the feed concentration of the compounds to be adsorbed (adsorbates). The adsorption dynamics of a fixed-bed is crucial for a well-designed adsorption process. This work focuses on physical adsorption and provides...
| Autores: | , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/173647 |
| Acceso en línea: | https://hdl.handle.net/11441/173647 https://doi.org/10.1016/j.cej.2019.121985 |
| Access Level: | acceso abierto |
| Palabra clave: | Breakthrough curve Fixed-bed column Adsorption Gas separation Modeling Simulation |
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Modeling of fixed-bed columns for gas physical adsorptionGutiérrez Ortiz, Francisco JavierBarragán Rodríguez, ManuelYang, Ralph T.Breakthrough curveFixed-bed columnAdsorptionGas separationModelingSimulationAdsorption processes may be classified as purification or bulk separation, depending on the feed concentration of the compounds to be adsorbed (adsorbates). The adsorption dynamics of a fixed-bed is crucial for a well-designed adsorption process. This work focuses on physical adsorption and provides a modeling to predict the breakthrough curves using a minimum set of experimental data. The modeling does not require one to obtain key parameters from the experiment unlike other modeling found in the literature. In addition, boundary conditions, thermal effects, correlations to be used, and the homogeneous/heterogeneous modelings are discussed for 1-D modeling, after verifying that it provides the same output as 2-D modeling does. Moreover, it is demonstrated that pseudo-homogeneous modeling is realistic, so a more complex heterogeneous modeling is not necessary. The modeling has been tested against five sets of experimental data: three cases of bulk separation and two cases for purification. The simulation was carried out by Comsol Multiphysics software, and a good match between the experimental data and the simulation output was achieved, which demonstrates the applicability of the modeling, so it may be used with confidence. Purification can be modeled as an isothermal process, and no energy balance equation is needed. However, for bulk separation, noticeable thermal effects may take place due to the relatively high adsorbed gas that consequently releases a higher amount of heat; at the same time, the superficial fluid velocity is reduced due to the decrease in the flow-rate, and the gas properties change, affecting the breakthrough curves.ElsevierIngeniería Química y Ambiental2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/173647https://doi.org/10.1016/j.cej.2019.121985reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésChemical Engineering Journal, 378, 121985.Supplementary Data, https://ars.els-cdn.com/content/image/1-s2.0-S1385894719313798-mmc1.docxhttps://www.sciencedirect.com/science/article/pii/S1385894719313798info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1736472026-06-17T12:51:07Z |
| dc.title.none.fl_str_mv |
Modeling of fixed-bed columns for gas physical adsorption |
| title |
Modeling of fixed-bed columns for gas physical adsorption |
| spellingShingle |
Modeling of fixed-bed columns for gas physical adsorption Gutiérrez Ortiz, Francisco Javier Breakthrough curve Fixed-bed column Adsorption Gas separation Modeling Simulation |
| title_short |
Modeling of fixed-bed columns for gas physical adsorption |
| title_full |
Modeling of fixed-bed columns for gas physical adsorption |
| title_fullStr |
Modeling of fixed-bed columns for gas physical adsorption |
| title_full_unstemmed |
Modeling of fixed-bed columns for gas physical adsorption |
| title_sort |
Modeling of fixed-bed columns for gas physical adsorption |
| dc.creator.none.fl_str_mv |
Gutiérrez Ortiz, Francisco Javier Barragán Rodríguez, Manuel Yang, Ralph T. |
| author |
Gutiérrez Ortiz, Francisco Javier |
| author_facet |
Gutiérrez Ortiz, Francisco Javier Barragán Rodríguez, Manuel Yang, Ralph T. |
| author_role |
author |
| author2 |
Barragán Rodríguez, Manuel Yang, Ralph T. |
| author2_role |
author author |
| dc.contributor.none.fl_str_mv |
Ingeniería Química y Ambiental |
| dc.subject.none.fl_str_mv |
Breakthrough curve Fixed-bed column Adsorption Gas separation Modeling Simulation |
| topic |
Breakthrough curve Fixed-bed column Adsorption Gas separation Modeling Simulation |
| description |
Adsorption processes may be classified as purification or bulk separation, depending on the feed concentration of the compounds to be adsorbed (adsorbates). The adsorption dynamics of a fixed-bed is crucial for a well-designed adsorption process. This work focuses on physical adsorption and provides a modeling to predict the breakthrough curves using a minimum set of experimental data. The modeling does not require one to obtain key parameters from the experiment unlike other modeling found in the literature. In addition, boundary conditions, thermal effects, correlations to be used, and the homogeneous/heterogeneous modelings are discussed for 1-D modeling, after verifying that it provides the same output as 2-D modeling does. Moreover, it is demonstrated that pseudo-homogeneous modeling is realistic, so a more complex heterogeneous modeling is not necessary. The modeling has been tested against five sets of experimental data: three cases of bulk separation and two cases for purification. The simulation was carried out by Comsol Multiphysics software, and a good match between the experimental data and the simulation output was achieved, which demonstrates the applicability of the modeling, so it may be used with confidence. Purification can be modeled as an isothermal process, and no energy balance equation is needed. However, for bulk separation, noticeable thermal effects may take place due to the relatively high adsorbed gas that consequently releases a higher amount of heat; at the same time, the superficial fluid velocity is reduced due to the decrease in the flow-rate, and the gas properties change, affecting the breakthrough curves. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2019 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion |
| format |
article |
| status_str |
acceptedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/11441/173647 https://doi.org/10.1016/j.cej.2019.121985 |
| url |
https://hdl.handle.net/11441/173647 https://doi.org/10.1016/j.cej.2019.121985 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Chemical Engineering Journal, 378, 121985. Supplementary Data, https://ars.els-cdn.com/content/image/1-s2.0-S1385894719313798-mmc1.docx https://www.sciencedirect.com/science/article/pii/S1385894719313798 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
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Elsevier |
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reponame:idUS. Depósito de Investigación de la Universidad de Sevilla instname:Universidad de Sevilla (US) |
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Universidad de Sevilla (US) |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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15.223283 |